diff --git a/angular-scroll.js b/angular-scroll.js
index 766013b..b89bb46 100644
--- a/angular-scroll.js
+++ b/angular-scroll.js
@@ -8,11 +8,18 @@ var duScrollDefaultEasing = function (x) {
   return 1-Math.pow((1-x)*2, 2)/2;
 };
 
-angular.module('duScroll', ['duScroll.scrollspy', 'duScroll.requestAnimation', 'duScroll.smoothScroll', 'duScroll.scrollContainer', 'duScroll.scrollHelpers']).value('duScrollDuration', 1000).value('duScrollEasing', duScrollDefaultEasing);
+angular.module('duScroll', [
+  'duScroll.scrollspy', 
+  'duScroll.requestAnimation', 
+  'duScroll.smoothScroll', 
+  'duScroll.scrollContainer', 
+  'duScroll.scrollHelpers'
+]).value('duScrollDuration', 350)
+  .value('duScrollEasing', duScrollDefaultEasing);
 
 
 angular.module('duScroll.scrollHelpers', []).
-run(function($window, requestAnimation, duScrollEasing) {
+run(function($window, cancelAnimation, requestAnimation, duScrollEasing) {
   var proto = angular.element.prototype;
   this.$get = function() {
     return proto;
@@ -45,6 +52,7 @@ run(function($window, requestAnimation, duScrollEasing) {
     el.scrollTop = top;
   };
 
+  var scrollAnimation;
   proto.scrollToAnimated = function(left, top, duration, easing) {
     if(duration && !easing) {
       easing = duScrollEasing;
@@ -56,18 +64,29 @@ run(function($window, requestAnimation, duScrollEasing) {
 
     if(!deltaLeft && !deltaTop) return;
 
-    var frame = 0, frames = Math.ceil(duration/60);
+    var startTime = null;
+    if(scrollAnimation) {
+      cancelAnimation(scrollAnimation);
+    }
+    var el = this;
+
+    var animationStep = function(timestamp) {
+      if (startTime === null) {
+        startTime = timestamp;
+      }
 
-    var animate = function() {
-      frame++;
-      var percent = (frame === frames ? 1 : easing(frame/frames));
-      this.scrollTo(
+      var progress = timestamp - startTime;
+      var percent = (progress >= duration ? 1 : easing(progress/duration));
+      
+      el.scrollTo(
         startLeft + Math.ceil(deltaLeft * percent),
         startTop + Math.ceil(deltaTop * percent)
       );
-      if(frame<frames) { requestAnimation(animate); }
-    }.bind(this);
-    animate();
+
+      scrollAnimation = (percent < 1 ? requestAnimation(animationStep) : null);
+    };
+
+    scrollAnimation = requestAnimation(animationStep);
   };
 
   proto.scrollToElement = function(target, offset, duration, easing) {
@@ -104,18 +123,49 @@ run(function($window, requestAnimation, duScrollEasing) {
 });
 
 
-angular.module('duScroll.requestAnimation', []).
-factory('requestAnimation', function($window, $timeout) {
-  return $window.requestAnimationFrame  ||
-    $window.webkitRequestAnimationFrame ||
-    $window.mozRequestAnimationFrame    ||
-    $window.oRequestAnimationFrame      ||
-    $window.msRequestAnimationFrame     ||
-    function fallback( callback ){
-      $timeout(callback, 1000 / 60);
-    };
+//Adapted from https://gist.github.com/paulirish/1579671
+angular.module('duScroll.polyfill', []).
+factory('polyfill', function($window) {
+  var vendors = ['webkit', 'moz', 'o', 'ms'];
+
+  return function(fnName, fallback) {
+    if($window[fnName]) {
+      return $window[fnName];
+    }
+    var suffix = fnName.substr(0, 1).toUpperCase() + fnName.substr(1);
+    for(var key, i = 0; i < vendors.length; i++) {
+      key = vendors[i]+suffix;
+      if($window[key]) {
+        return $window[key];
+      }
+    }
+    return fallback;
+  };
+});
+
+angular.module('duScroll.requestAnimation', ['duScroll.polyfill']).
+factory('requestAnimation', function(polyfill, $timeout) {
+  var lastTime = 0;
+  var fallback = function(callback, element) {
+    var currTime = new Date().getTime();
+    var timeToCall = Math.max(0, 16 - (currTime - lastTime));
+    var id = $timeout(function() { callback(currTime + timeToCall); },
+      timeToCall);
+    lastTime = currTime + timeToCall;
+    return id;
+  };
+  
+  return polyfill('requestAnimationFrame', fallback);
+}).
+factory('cancelAnimation', function(polyfill, $timeout) {
+  var fallback = function(promise) {
+    $timeout.cancel(promise);
+  };
+
+  return polyfill('cancelAnimationFrame', fallback);
 });
 
+
 angular.module('duScroll.spyAPI', ['duScroll.scrollContainerAPI']).
 factory('spyAPI', function($rootScope, scrollContainerAPI) {
   var createScrollHandler = function(context) {
@@ -230,7 +280,8 @@ factory('spyAPI', function($rootScope, scrollContainerAPI) {
     addSpy: addSpy,
     removeSpy: removeSpy, 
     createContext: createContext,
-    destroyContext: destroyContext
+    destroyContext: destroyContext,
+    getContextForScope: getContextForScope
   };
 });
 
@@ -281,8 +332,7 @@ directive('duSmoothScroll', function(duScrollDuration, scrollContainerAPI){
 
   return {
     link : function($scope, $element, $attr){
-      var element = angular.element($element[0]);
-      element.on('click', function(e){
+      $element.on('click', function(e){
         if(!$attr.href || $attr.href.indexOf('#') === -1) return;
         var target = document.getElementById($attr.href.replace(/.*(?=#[^\s]+$)/, '').substring(1));
         if(!target || !target.getBoundingClientRect) return;
diff --git a/angular-scroll.min.js b/angular-scroll.min.js
index ce96a06..44f063e 100644
--- a/angular-scroll.min.js
+++ b/angular-scroll.min.js
@@ -1,2 +1 @@
-var duScrollDefaultEasing=function(a){return.5>a?Math.pow(2*a,2)/2:1-Math.pow(2*(1-a),2)/2};angular.module("duScroll",["duScroll.scrollspy","duScroll.requestAnimation","duScroll.smoothScroll","duScroll.scrollContainer","duScroll.scrollHelpers"]).value("duScrollDuration",1e3).value("duScrollEasing",duScrollDefaultEasing),angular.module("duScroll.scrollHelpers",[]).run(["$window","requestAnimation","duScrollEasing",function(a,b,c){var d=angular.element.prototype;this.$get=function(){return d};var e=function(a){return"undefined"!=typeof HTMLDocument&&a instanceof HTMLDocument||a.nodeType&&a.nodeType===a.DOCUMENT_NODE},f=function(a){return"undefined"!=typeof HTMLElement&&a instanceof HTMLElement||a.nodeType&&a.nodeType===a.ELEMENT_NODE},g=function(a){return f(a)||e(a)?a:a[0]};d.scrollTo=function(b,c,d){if(angular.isElement(b))return this.scrollToElement(b,0,c,d);if(d)return this.scrollToAnimated.apply(this,arguments);var f=g(this);return e(f)?a.scrollTo(b,c):(f.scrollLeft=b,f.scrollTop=c,void 0)},d.scrollToAnimated=function(a,d,e,f){e&&!f&&(f=c);var g=this.scrollLeft(),h=this.scrollTop(),i=Math.round(a-g),j=Math.round(d-h);if(i||j){var k=0,l=Math.ceil(e/60),m=function(){k++;var a=k===l?1:f(k/l);this.scrollTo(g+Math.ceil(i*a),h+Math.ceil(j*a)),l>k&&b(m)}.bind(this);m()}},d.scrollToElement=function(a,b,c,d){var e=g(this),h=this.scrollTop()+g(a).getBoundingClientRect().top-b;f(e)&&(h-=e.getBoundingClientRect().top),this.scrollTo(0,h,c,d)},d.scrollLeft=function(b,c,d){if(angular.isNumber(b))return this.scrollTo(b,this.scrollTop(),c,d);var f=g(this);return e(f)?a.scrollX||document.documentElement.scrollLeft||document.body.scrollLeft:f.scrollLeft},d.scrollTop=function(b,c,d){if(angular.isNumber(b))return this.scrollTo(this.scrollTop(),b,c,d);var f=g(this);return e(f)?a.scrollY||document.documentElement.scrollTop||document.body.scrollTop:f.scrollTop}}]),angular.module("duScroll.requestAnimation",[]).factory("requestAnimation",["$window","$timeout",function(a,b){return a.requestAnimationFrame||a.webkitRequestAnimationFrame||a.mozRequestAnimationFrame||a.oRequestAnimationFrame||a.msRequestAnimationFrame||function(a){b(a,1e3/60)}}]),angular.module("duScroll.spyAPI",["duScroll.scrollContainerAPI"]).factory("spyAPI",["$rootScope","scrollContainerAPI",function(a,b){var c=function(b){return function(){var c=b.container,d=c[0],e=0;d instanceof HTMLElement&&(e=d.getBoundingClientRect().top);var f,g,h,i,j,k;for(i=b.spies,g=b.currentlyActive,h=void 0,f=0;f<i.length;f++){if(j=i[f],k=j.getTargetPosition(),!k)return;k.top+j.offset-e<20&&-1*k.top+e<k.height&&(!h||h.top<k.top)&&(h={top:k.top,spy:j})}h&&(h=h.spy),g!==h&&(g&&(g.$element.removeClass("active"),a.$broadcast("duScrollspy:becameInactive",g.$element)),h&&(h.$element.addClass("active"),a.$broadcast("duScrollspy:becameActive",h.$element)),b.currentlyActive=h)}},d={},e=function(a){var b=a.$id,e={spies:[]};return e.handler=c(e),d[b]=e,a.$on("$destroy",function(){f(a)}),b},f=function(a){var b=a.$id,c=d[b],e=c.container;e&&e.off("scroll",c.handler),delete d[b]},g=e(a),h=function(a){return d[a.$id]?d[a.$id]:a.$parent?h(a.$parent):d[g]},i=function(a){return h(a.$element.scope())},j=function(a){var c=i(a);i(a).spies.push(a),c.container||(c.container=b.getContainer(a.$element.scope()),c.container.on("scroll",c.handler).triggerHandler("scroll"))},k=function(a){var b=i(a);a===b.currentlyActive&&(b.currentlyActive=null);var c=b.spies.indexOf(a);-1!==c&&b.spies.splice(c,1)};return{addSpy:j,removeSpy:k,createContext:e,destroyContext:f}}]),angular.module("duScroll.scrollContainerAPI",[]).factory("scrollContainerAPI",["$document",function(a){var b={},c=function(a,c){var d=a.$id;return b[d]=c,d},d=function(a){return b[a.$id]?a.$id:a.$parent?d(a.$parent):void 0},e=function(c){var e=d(c);return e?b[e]:a},f=function(a){var c=d(a);c&&delete b[c]};return{getContainerId:d,getContainer:e,setContainer:c,removeContainer:f}}]),angular.module("duScroll.smoothScroll",["duScroll.scrollHelpers","duScroll.scrollContainerAPI"]).directive("duSmoothScroll",["duScrollDuration","scrollContainerAPI",function(a,b){return{link:function(c,d,e){var f=angular.element(d[0]);f.on("click",function(d){if(e.href&&-1!==e.href.indexOf("#")){var f=document.getElementById(e.href.replace(/.*(?=#[^\s]+$)/,"").substring(1));if(f&&f.getBoundingClientRect){d.stopPropagation&&d.stopPropagation(),d.preventDefault&&d.preventDefault();var g=e.offset?parseInt(e.offset,10):0,h=e.duration?parseInt(e.duration,10):a,i=b.getContainer(c);i.scrollToElement(angular.element(f),isNaN(g)?0:g,isNaN(h)?0:h)}}})}}}]),angular.module("duScroll.spyContext",["duScroll.spyAPI"]).directive("duSpyContext",["spyAPI",function(a){return{restrict:"A",scope:!0,compile:function(){return{pre:function(b){a.createContext(b)}}}}}]),angular.module("duScroll.scrollContainer",["duScroll.scrollContainerAPI"]).directive("duScrollContainer",["scrollContainerAPI",function(a){return{restrict:"A",scope:!0,compile:function(){return{pre:function(b,c,d){d.$observe("duScrollContainer",function(d){angular.isString(d)&&(d=document.getElementById(d)),d=angular.isElement(d)?angular.element(d):c,a.setContainer(b,d),b.$on("$destroy",function(){a.removeContainer(b)})})}}}}}]),angular.module("duScroll.scrollspy",["duScroll.spyAPI"]).directive("duScrollspy",["spyAPI","$timeout",function(a,b){var c=function(a,b,c){angular.isElement(a)?this.target=a:angular.isString(a)&&(this.targetId=a),this.$element=b,this.offset=c};return c.prototype.getTargetElement=function(){return!this.target&&this.targetId&&(this.target=document.getElementById(this.targetId)),this.target},c.prototype.getTargetPosition=function(){var a=this.getTargetElement();return a?a.getBoundingClientRect():void 0},c.prototype.flushTargetCache=function(){this.targetId&&(this.target=void 0)},{link:function(d,e,f){var g,h=f.ngHref||f.href;h&&-1!==h.indexOf("#")?g=h.replace(/.*(?=#[^\s]+$)/,"").substring(1):f.duScrollspy&&(g=f.duScrollspy),g&&b(function(){var b=new c(g,e,-(f.offset?parseInt(f.offset,10):0));a.addSpy(b),d.$on("$destroy",function(){a.removeSpy(b)}),d.$on("$locationChangeSuccess",b.flushTargetCache.bind(b))},0)}}}]);
-//# sourceMappingURL=angular-scroll.min.js.map
\ No newline at end of file
+var duScrollDefaultEasing=function(t){return.5>t?Math.pow(2*t,2)/2:1-Math.pow(2*(1-t),2)/2};angular.module("duScroll",["duScroll.scrollspy","duScroll.requestAnimation","duScroll.smoothScroll","duScroll.scrollContainer","duScroll.scrollHelpers"]).value("duScrollDuration",350).value("duScrollEasing",duScrollDefaultEasing),angular.module("duScroll.scrollHelpers",[]).run(["$window","cancelAnimation","requestAnimation","duScrollEasing",function(t,e,n,r){var o=angular.element.prototype;this.$get=function(){return o};var l=function(t){return"undefined"!=typeof HTMLDocument&&t instanceof HTMLDocument||t.nodeType&&t.nodeType===t.DOCUMENT_NODE},i=function(t){return"undefined"!=typeof HTMLElement&&t instanceof HTMLElement||t.nodeType&&t.nodeType===t.ELEMENT_NODE},c=function(t){return i(t)||l(t)?t:t[0]};o.scrollTo=function(e,n,r){if(angular.isElement(e))return this.scrollToElement(e,0,n,r);if(r)return this.scrollToAnimated.apply(this,arguments);var o=c(this);return l(o)?t.scrollTo(e,n):(o.scrollLeft=e,void(o.scrollTop=n))};var u;o.scrollToAnimated=function(t,o,l,i){l&&!i&&(i=r);var c=this.scrollLeft(),a=this.scrollTop(),s=Math.round(t-c),d=Math.round(o-a);if(s||d){var f=null;u&&e(u);var p=this,m=function(t){null===f&&(f=t);var e=t-f,r=e>=l?1:i(e/l);p.scrollTo(c+Math.ceil(s*r),a+Math.ceil(d*r)),u=1>r?n(m):null};u=n(m)}},o.scrollToElement=function(t,e,n,r){var o=c(this),l=this.scrollTop()+c(t).getBoundingClientRect().top-e;i(o)&&(l-=o.getBoundingClientRect().top),this.scrollTo(0,l,n,r)},o.scrollLeft=function(e,n,r){if(angular.isNumber(e))return this.scrollTo(e,this.scrollTop(),n,r);var o=c(this);return l(o)?t.scrollX||document.documentElement.scrollLeft||document.body.scrollLeft:o.scrollLeft},o.scrollTop=function(e,n,r){if(angular.isNumber(e))return this.scrollTo(this.scrollTop(),e,n,r);var o=c(this);return l(o)?t.scrollY||document.documentElement.scrollTop||document.body.scrollTop:o.scrollTop}}]),angular.module("duScroll.polyfill",[]).factory("polyfill",["$window",function(t){var e=["webkit","moz","o","ms"];return function(n,r){if(t[n])return t[n];for(var o,l=n.substr(0,1).toUpperCase()+n.substr(1),i=0;i<e.length;i++)if(o=e[i]+l,t[o])return t[o];return r}}]),angular.module("duScroll.requestAnimation",["duScroll.polyfill"]).factory("requestAnimation",["polyfill","$timeout",function(t,e){var n=0,r=function(t){var r=(new Date).getTime(),o=Math.max(0,16-(r-n)),l=e(function(){t(r+o)},o);return n=r+o,l};return t("requestAnimationFrame",r)}]).factory("cancelAnimation",["polyfill","$timeout",function(t,e){var n=function(t){e.cancel(t)};return t("cancelAnimationFrame",n)}]),angular.module("duScroll.spyAPI",["duScroll.scrollContainerAPI"]).factory("spyAPI",["$rootScope","scrollContainerAPI",function(t,e){var n=function(e){return function(){var n=e.container,r=n[0],o=0;r instanceof HTMLElement&&(o=r.getBoundingClientRect().top);var l,i,c,u,a,s;for(u=e.spies,i=e.currentlyActive,c=void 0,l=0;l<u.length;l++){if(a=u[l],s=a.getTargetPosition(),!s)return;s.top+a.offset-o<20&&-1*s.top+o<s.height&&(!c||c.top<s.top)&&(c={top:s.top,spy:a})}c&&(c=c.spy),i!==c&&(i&&(i.$element.removeClass("active"),t.$broadcast("duScrollspy:becameInactive",i.$element)),c&&(c.$element.addClass("active"),t.$broadcast("duScrollspy:becameActive",c.$element)),e.currentlyActive=c)}},r={},o=function(t){var e=t.$id,o={spies:[]};return o.handler=n(o),r[e]=o,t.$on("$destroy",function(){l(t)}),e},l=function(t){var e=t.$id,n=r[e],o=n.container;o&&o.off("scroll",n.handler),delete r[e]},i=o(t),c=function(t){return r[t.$id]?r[t.$id]:t.$parent?c(t.$parent):r[i]},u=function(t){return c(t.$element.scope())},a=function(t){var n=u(t);u(t).spies.push(t),n.container||(n.container=e.getContainer(t.$element.scope()),n.container.on("scroll",n.handler).triggerHandler("scroll"))},s=function(t){var e=u(t);t===e.currentlyActive&&(e.currentlyActive=null);var n=e.spies.indexOf(t);-1!==n&&e.spies.splice(n,1)};return{addSpy:a,removeSpy:s,createContext:o,destroyContext:l,getContextForScope:c}}]),angular.module("duScroll.scrollContainerAPI",[]).factory("scrollContainerAPI",["$document",function(t){var e={},n=function(t,n){var r=t.$id;return e[r]=n,r},r=function(t){return e[t.$id]?t.$id:t.$parent?r(t.$parent):void 0},o=function(n){var o=r(n);return o?e[o]:t},l=function(t){var n=r(t);n&&delete e[n]};return{getContainerId:r,getContainer:o,setContainer:n,removeContainer:l}}]),angular.module("duScroll.smoothScroll",["duScroll.scrollHelpers","duScroll.scrollContainerAPI"]).directive("duSmoothScroll",["duScrollDuration","scrollContainerAPI",function(t,e){return{link:function(n,r,o){r.on("click",function(r){if(o.href&&-1!==o.href.indexOf("#")){var l=document.getElementById(o.href.replace(/.*(?=#[^\s]+$)/,"").substring(1));if(l&&l.getBoundingClientRect){r.stopPropagation&&r.stopPropagation(),r.preventDefault&&r.preventDefault();var i=o.offset?parseInt(o.offset,10):0,c=o.duration?parseInt(o.duration,10):t,u=e.getContainer(n);u.scrollToElement(angular.element(l),isNaN(i)?0:i,isNaN(c)?0:c)}}})}}}]),angular.module("duScroll.spyContext",["duScroll.spyAPI"]).directive("duSpyContext",["spyAPI",function(t){return{restrict:"A",scope:!0,compile:function(){return{pre:function(e){t.createContext(e)}}}}}]),angular.module("duScroll.scrollContainer",["duScroll.scrollContainerAPI"]).directive("duScrollContainer",["scrollContainerAPI",function(t){return{restrict:"A",scope:!0,compile:function(){return{pre:function(e,n,r){r.$observe("duScrollContainer",function(r){angular.isString(r)&&(r=document.getElementById(r)),r=angular.isElement(r)?angular.element(r):n,t.setContainer(e,r),e.$on("$destroy",function(){t.removeContainer(e)})})}}}}}]),angular.module("duScroll.scrollspy",["duScroll.spyAPI"]).directive("duScrollspy",["spyAPI","$timeout",function(t,e){var n=function(t,e,n){angular.isElement(t)?this.target=t:angular.isString(t)&&(this.targetId=t),this.$element=e,this.offset=n};return n.prototype.getTargetElement=function(){return!this.target&&this.targetId&&(this.target=document.getElementById(this.targetId)),this.target},n.prototype.getTargetPosition=function(){var t=this.getTargetElement();return t?t.getBoundingClientRect():void 0},n.prototype.flushTargetCache=function(){this.targetId&&(this.target=void 0)},{link:function(r,o,l){var i,c=l.ngHref||l.href;c&&-1!==c.indexOf("#")?i=c.replace(/.*(?=#[^\s]+$)/,"").substring(1):l.duScrollspy&&(i=l.duScrollspy),i&&e(function(){var e=new n(i,o,-(l.offset?parseInt(l.offset,10):0));t.addSpy(e),r.$on("$destroy",function(){t.removeSpy(e)}),r.$on("$locationChangeSuccess",e.flushTargetCache.bind(e))},0)}}}]);
\ No newline at end of file
diff --git a/angular-scroll.min.js.map b/angular-scroll.min.js.map
index 6d56a98..d8acb8b 100644
--- a/angular-scroll.min.js.map
+++ b/angular-scroll.min.js.map
@@ -1 +1 @@
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diff --git a/bower.json b/bower.json
index 1d62c43..9781eb2 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "angular-scroll",
-  "version": "0.5.1",
+  "version": "0.5.2",
   "main": "angular-scroll.min.js",
   "ignore": [
     "**/.*",
diff --git a/package.json b/package.json
index 5e5412b..2963ce4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "angular-scroll",
-  "version": "0.5.1",
+  "version": "0.5.2",
   "description": "Scrollspy, animated scrollTo and scroll events",
   "keywords": [
     "angular",